Banner 0
Banner 1
Banner 2
Banner 3
Banner 4
Banner 5

Q.

Consider the following pairs of ions

A) Sc+3 and Ti+4

B) Mn+2 and Fe+2

C) Fe+2 and Co+3

D) Cu+ and Zn+2

Among these pairs of ions, isoelectronic pairs would include

 

see full answer

Start JEE / NEET / Foundation preparation at rupees 99/day !!

21% of IItians & 23% of AIIMS delhi doctors are from Sri Chaitanya institute !!
An Intiative by Sri Chaitanya

a

B, C and D

b

A, C and D

c

A, B and D

d

A, B and C

answer is B.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

Consider the electronic configuration of each species in all pairs.

A) Sc+3Z=211s22s22p63s23p6 or Ar Ti+4Z=221s22s22p63s23p6 or ArB) Mn+2Z=251s22s22p63s23p63d5 or Ar3d5 Fe+2Z=261s22s22p63s23p63d6 or Ar3d6C) Fe+2Z=261s22s22p63s23p63d6 or Ar3d6 Co+3Z=271s22s22p63s23p63d6 or Ar3d6

D) Cu+1Z=291s22s22p63s23p63d10 or Ar3d10 Zn+2Z=301s22s22p63s23p63d10 or Ar3d10Therefore, in the above all only A, C and D pairs have the same number of electrons.

Watch 3-min video & get full concept clarity

Best Courses for You

JEE

JEE

NEET

NEET

Foundation JEE

Foundation JEE

Foundation NEET

Foundation NEET

CBSE

CBSE

score_test_img

Get Expert Academic Guidance – Connect with a Counselor Today!

whats app icon
Consider the following pairs of ionsA) Sc+3 and Ti+4B) Mn+2 and Fe+2C) Fe+2 and Co+3D) Cu+ and Zn+2Among these pairs of ions, isoelectronic pairs would include